Front communication - Arc protection - Bay control and measurement - Merging unit - Operation Manual - SMU615 Substation Merging Unit - 1.0 - IEC - ANSI - 16.05.2023

SMU615 Operation Manual

The RJ-45 port in the LHMI enables front communication. Two LEDs are located above the communication port.

  • The green uplink LED on the left is lit when the cable is successfully connected to the port.
  • The yellow communication LED on the right flashes when the protection relay communicates with the connected device.
Figure 1. RJ-45 communication port and indication LEDs
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1
Uplink LED
2
Communication LED

When a computer is connected to the protection relay, the relay's DHCP server for the front interface assigns an IP address to the computer. The fixed IP address for the front port is 192.168.0.254.